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United States Patent | 5,342,681 |
Sulzbach | August 30, 1994 |
A light absorbing, low reflectance coating and method of fabricating the coating provided by electron beam evaporation of aluminum onto substrates bombarded with nitrogen ions to produce a randomly textured coating which traps light in a labyrinth. The coating is electrically insulating except for the first few tens of atoms which remain metallic. Absorptance exceeds 90% in the 0.4 to 16 .mu.m region. The coating is flexible and can be deposited on a polymer base.
Inventors: | Sulzbach; Frank C. (Dallas, TX) |
Assignee: | Texas Instruments Incorporated (Dallas, TX) |
Appl. No.: | 937254 |
Filed: | August 28, 1992 |
Current U.S. Class: | 428/310.5; 428/307.3; 428/336; 428/432; 428/469; 428/472; 428/613; 428/620; 428/681; 428/688; 428/689; 428/698; 428/704 |
Intern'l Class: | B32B 005/14 |
Field of Search: | 428/457,469,432,704,688,689,698,699,307.3,310.5,472,336,697,613,620,681,704 204/192.1,192.26 427/64,70 |
4540914 | Sep., 1985 | Maple | 427/64. |
4950558 | Aug., 1990 | Sarin | 428/446. |
4959136 | Sep., 1990 | Hatwar | 204/192. |
4997673 | Mar., 1991 | Ogata | 427/528. |